Echo Retro Carbon Block Filter The Echo Retro Carbon Block Filter, formerly known as the NHM-130 Carbon Block Filter, is a vital component of the Echo Retro (previously NHM-130 Machine). This proprietary filter is designed to provide clean, safe, and refreshing water by removing a wide range of contaminants. Key Benefits Comprehensive Filtration: Removes chlorine, chloramines, pharmaceutical drugs, water-soluble metals, bacteria, algae, pesticides, and other harmful chemicals commonly found in water. Proprietary Design: Specifically crafted for compatibility with the Echo Retro Machine, ensuring optimal performance. Healthier Water: Provides clean, safe water for drinking, cooking, and daily use. Filter Replacement Guidelines Filter Life: Lasts up to 475 gallons. Replacement Frequency: Replace every six months for optimal water quality. What It Removes Chlorine Chloramines Pharmaceutical drugs Water-soluble metals Bacteria Algae Pesticides Other harmful chemicals Compatibility Compatible Machine: Echo Retro (previously NHM-130 Machine). Keep your Echo Retro performing at its best by regularly replacing the Carbon Block Filter, ensuring your water is free from contaminants and safe for your family.